First planet

First planet may refer to:

• Mercury (planet), the first planet from the Sun
• Moon, the first planet from Earth in the Ptolemaic geocentric model
• Vulcan (hypothetical planet), a hypothetical planet formerly believed to exist within Mercury's orbit

See also

• Second planet (disambiguation)
• Third planet (disambiguation)
• Fourth planet (disambiguation)
• Fifth planet (disambiguation)
• Sixth planet (disambiguation)
• Seventh planet (disambiguation)
• Eighth planet (disambiguation)
• Ninth planet (disambiguation)
• Tenth planet (disambiguation)
• Eleventh planet
• Twelfth planet (disambiguation)